|Publication number||WO1993022984 A1|
|Publication date||25 Nov 1993|
|Filing date||13 May 1993|
|Priority date||15 May 1992|
|Publication number||PCT/1993/7, PCT/PL/1993/000007, PCT/PL/1993/00007, PCT/PL/93/000007, PCT/PL/93/00007, PCT/PL1993/000007, PCT/PL1993/00007, PCT/PL1993000007, PCT/PL199300007, PCT/PL93/000007, PCT/PL93/00007, PCT/PL93000007, PCT/PL9300007, WO 1993/022984 A1, WO 1993022984 A1, WO 1993022984A1, WO 9322984 A1, WO 9322984A1, WO-A1-1993022984, WO-A1-9322984, WO1993/022984A1, WO1993022984 A1, WO1993022984A1, WO9322984 A1, WO9322984A1|
|Inventors||Jaroslaw Deszczynski, Janusz Karpinski|
|Applicant||Deszczyn & Cir & Ski Jaroslaw, Karpin & Cir & Ski Janusz|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Referenced by (2), Classifications (6), Legal Events (5)|
|External Links: Patentscope, Espacenet|
A STABILIZER FOR TREATING BROKEN BONES
Field of the Invention
The present invention concerns an external stabilizer for treatment of broken bones, especially joint bones.
Background of the Invention
There are known the external stabilizers for treatment of bone breaks, equipped with bone screws, stabilizing rails and controlling - stabilizing mechanismus. The exemples are stabilizers known from filing specifications RP nr P 280389, P 283664 and P 285201. Such stabilizers enable the reposition of bone stumps in axial lift and their stabilization. Such stabilizers have however disadvantages, namely large overall dimensions impossibility of full reposition and a lack of satisfying stabilization.
The Iliazarow's stabilizers assure good stabilization and reposition of bone stumps, however they have large overall dimensions and due to a lack of movable joint they can not be used for treatment based on functional method.
Summary of the Invention
The object of the invention is to elaborate the stabilizing set - up, enabling the correlation of displacements, stabilization of bone stumps and functional treatment in motion, with possibility of accomodation the elements of said set - up corresponding to a kind of bone break. The stabilizer consists of an assembly of guiding rail and connector with bone screws, what constitutes the prior-to-joint assembly. It has a possibility of adjusting the position of rails in relation to connector and of bone screws in relation to connector. The prior-to-joint assembly in connected by a movable joint with an out-of-joint assembly, which depending on the location constututes symetrically the same out-of-joint construction or a specific construction intended for treatment of broken elbow or ankle joint. For treatment of broken shaft of bones there is applied the stabilizer, composed of prior-of-joint assembly, having joint part replaced with the openings for bone screws.
These and further objects, features and advantages of the present invention will become apparent from the following detailed description, wherein reference is made to the figures in the accompanying drawings.
Brief Description of the Drawings
Pig. 1 shows schematically a longitudinal cross - section of the device;
Fig. 2 shows the device in a side cross - section; Fig. 3 is a front view of the connector with bone screws;
Fig. 4 is a longitudinal cross - section of priorto-joint assembly with closed section;
Fig. 5 is a side view of the assembly as seen from Figure 4;
Fig. 6 is a cross - section of the assembly from Figure 4; Fig. 7 is a cross - section of the prior-to-joint assembly having a C - shaped section;
Fig. 8 is an element semi - circular in cross - section;
Fig. 9 is a side view of the element of Fig. 8;
Fig. 10 is a side view of out-of-joint ankle assembly;
Fig. 11 is a transverse cross - section of the assembly of Fig. 10;
Fig. 12 is a transverse cross - section of out-of-joint elbow assembly;
Fig. 13 is a longitudinal cross - section of the assembly of Fig. 12;
Fig. 14 is a side view of the assembly of Fig. 12; Fig. 15 is a longitudinal cross - section of the stabilizer for treating the shaft of long bones; and
Fig. 16 is a side view of the stabilizer.
Detailed Description of Preferred Embodiments
The stabilizer consists of prior-to-joint assembly as shown of Fig. 1 - 3 and composed advantageously of twoquide rails 1 , 2 having preferably a circular cross - section, on which there is embedded a longitudinal connector 7, having a possibility of axial movement. Said movement is generated by adjustment means 18, preferably in the form of a nut, directly or by means of elastic elements 17, eg. springs. On the other side of connector 7 there are means 4 for limiting movement, preferably in the form of nuts, threaded into quiding rails. Preferably between the means 4 for limiting movement and the connector 7 there are placed the damping elements, eg. of rubber /not shown/. Between one connector 7 and the second connector there are the quiding rails 1, 2 connected with a mechanical joint 3 having a characteristic approaching the human joint on which it is installed. In the connector 7 there are formed the apertures having the shape and the size approaching the quiding rails 1, 2. Angularly to them, and preferably at the straight angle, there are the openings 12, in which the bone screws 14, 15, 16 are fixed. On of bone screws 15 is shifted transversely in transverse oval orifice 11, what enables its displacement in relation to an axis of the assembly, as well as compensation of bone stumps displacements.
The shifting of said bone screw is realized by means of adjusting screw 32. The blocking of bone screws takes place by means of blocking screws 26 or bolts 27.
In order to obtain the larger stiffness and strenght of the assembly, especially in treatment of lower limb, advantageously there is applied the assembly as shown in Figs. 4 - 7, in which the connector 7 is places shiftably between external quide rails 1, 2 having a shape approaching the C - shaped rail 28 /Fig. 7/ or preferably having the closed cross - section rail 29 /Fig. 6/. The axial shifting is generated by the rotation of a tightering screw 30. The rails 28 or 29 are connected with the joint 3 by means of a hall joint 33 a blocking serew 34. For the treatment of broken bones in the space of metacarpus, metarsus and fingers there is advantageous to incorporate the bone screws together with stabilizing assembly at the angle of about 45° in relation to bending asiε of the joint. The axes of human joint and mechanical joint have to be simultaneously coextensive. It is realized by means of two semi - circular elements 21, constituting the axial joint. Said elements have the shape approaching the sections of rings.
For the treatment of elbow joint there is applied the stabilizer as shown in Figs. 12 - 14. It consists of a typical prior-to-joint assembly /not shown/, connected by means of an axial joint with the out-of-joint assembly, formed of an arcuately bent element 35, the proximal end thereof constituting the part of stabilizer's joint, and the second wide end has apertures for screws 40, 41. Said screws enter the openings 37, 38 of a plate 36 and enable its shifting. Unscrewing said screws enables the reposition of the break, and the blocking makes the reposition durable. At the end of the plate 36 there is placed a rotatable rod 39 having transverse openings 43, 44 in which there are embedded the bone screws, blocked by means of a nut 42.
For the treatment of ankle joint there is applied stabilizer as shown in Figs. 10 and 11. It consists of prior-to-joint assembly /not shown/, connected by means of an axial joint with out-of-joint assembly, constructed of a connector 45, constituting at one end the part of the joint, and at the other end constituting the leading for a quide 46. On its ends there are shiftably placed the elements 47, having the openings for the bone screws. All elements are blocked by means of the bolts.
For treatment of broken shaft of long legs there may be used the stabilizer as shown in Figs. 15 and 16. Said stabilizer is constructed from a connector 48 having a controller means 50, bone screws 48 and a part of quiding rails constituting an prior-to-joint assembly. The quiding rails are connected inseparably with element 52, being equipped with bone screws.
While the device described herein before is effectively adapted to fulfill the aforesaid object, it is to be understood that the invention is not intended to be limited to the specific preferred embodiment. Rather, it is to be taken as including all reasonable equivalents within the scope of the following claims.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|DE3527342A1 *||31 Jul 1985||12 Feb 1987||Aesculap Werke Ag||Clip fixator for fixing retention pins screwed into bone parts|
|EP0240034A1 *||6 Apr 1987||7 Oct 1987||Ulrich Dr.-Ing. Witzel||External fixation for osteosynthesis|
|EP0458486A1 *||7 May 1991||27 Nov 1991||James Bruce Richardson||Bone fixator|
|FR2129735A5 *||Title not available|
|US4730608 *||5 Mar 1986||15 Mar 1988||Schlein Allen P||External bone-anchoring fixator|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7931650||8 May 2003||26 Apr 2011||Zimmer Technology, Inc.||Adjustable bone stabilizing frame system|
|US8696668||28 Mar 2011||15 Apr 2014||Zimmer, Inc.||Adjustable bone stabilizing frame system|
|Cooperative Classification||A61B17/6475, A61B17/645, A61B17/6425|
|European Classification||A61B17/64H, A61B17/64D|
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